Road-grading machine.



O. W. HORTON. ROAD GRADING MACHINE. APPLIGATION FILED JULY 31, 1909.

Patented Apr 12, 1910.

3 SHEETS-SHEET 1.

W/Q/Wi WITNESSES i? 2 ANDREW a mum-u co" Pflmovumucmpuins wasmwnm n 0.W. HORTON.

ROAD GRADING MACHINE. APPLICATION FILED JUL Y31 955,071 Patented Apr.12, 1910.

a sums-SHEET 2.

my; VIII/IIIIII/IZ I k I W/TNESSES nvmvrofl (Zanles K1101 1022 ATTORNEYSANDREW I:v GRAIQM cm FHDTO LITHOGPAPNEIIS, WASHINGIDN. D, c

0. W. HORTON. ROAD GRADING MACHINE. APPLICATION FILED JULY 31, 1909.

Patented Apr. 12,1910.

3 SHBBTS-BHBBT 3.

WITNESSES CHARLES W. HORTON, OF BELLE RIVE, ILLINOIS.

ROAD-GRADING MACHINE.

Specification of Letters Iatent.

Application filed July 31, 1909.

Patented Apr-.12, 1910.

Serial No. 510,593.

To all whom it may concern:

Be it known that I, CHARLES W. HORTON, a citizen of the United States,and a resident of Belle Rive, in the county of Jefferson and State ofIllinois, have invented a new and Improved Road-Grading Machine, ofwhich the following is a full, clear, and exact description.

Among the principal objects which the present invention has in view are:to provide a construction whereby a grader may be controlled to operateover an increased area; to provide a structure wherein the operatingangle of the grading blade may be adjusted; and to provide a structurewhich is simple, efficient and durable.

One embodiment of the present invention is disclosed in the structureillustrated in the accompanying drawings, in which like characters ofreference denote corresponding parts in all the views, and in which-Figure l is a plan view of a machine constructed in accordance with thepresent invention; Fig. 2 is a side elevation in detail of the innerside of the land side of the machine; Fig. 3 is a section taken on theline 33 in Fig. 2, showing the main axle and land side extension beam inelevation; Fig. 1 is a rear elevation of the machine; Fig. 5 is a detailenlarged and in elevation showing the supporting yoke for the main axleand the bearing for the land side carrying wheel; and Fig. 6 is a crosssection of the main axle taken on the line 66 in Fig. 5.

The invention more particularly contemplates that form of operationwherein a road bed is graded with reference to a certain level andwherein the shifting dirt is moved in one direction only.

The machine is provided with a straight land side 7 to which is hingedlymounted an elongated grading blade 8, the relation between the land sideand grading blade being in the present machine in several respectssimilar to that between the land side and the mold board of an ordinaryplow. The land side 7 is provided at the rear and front ends with shoes9, 9 which are formed to an angular shape and are adapted to rest uponthe surface of the cut ground and against the side wall of the formerout.

The machine is carried by three traction wheels, the wheels 10, 10 beingmounted on the main axle. The main axle is constructed from two sectionsof pipes 11 and 12 the former telescoping within the latter. The pipes11 and 12 are maintained in their normal relation by means of aneye-block 13 which is probed through suitable perforations provided inthe end of the pipe 12 and at different points along the length of thepipe 11. The purpose in telescoping the main axle is to permit the swingof the blade 8. The main axle is further pivotally mounted at eitherend, being carried by the yokes 14 and 15 the former of which is mountedrigidly upon the pipe 11 while the latter is mounted upon the pipe 12.These yokes are each provided with perforations in the yoke arms throughwhich are threaded shafts 16 and 17 having hand wheels 18 and 19. Theshafts 16 and 17 arerotatably mounted in the yoke arms of the framingyokes 20 and 21, the former being slidably mounted upon the land side 7while the lat-- ter is fixedly mounted upon the blade 8. The bracketarms 20 are extended from a body 22 which is suitably mounted in slides23, 23 rigidly secured upon the land side 7. The body 22 is providedwith a perforation suitably tapped to receive a screw threaded extension24: of a screw 25. The screw 25 is rotatably mounted in bearings 26 and27 fixedly secured upon the land side 7. The screw 25 is provided with ahand Wheel 28 whereby the said screw is rotated.

When in the course of operation it becomes desirable to extend the blade8 to such a position, for instance, as shown in Fig. 1 of drawings, itis necessary that the main axle should be adapted to be extendedlongitudinally, and, also, it is equally necessary that the main axleand the wheels mounted thereon shall be advanced to the position shownin dotted lines in said Fig. 1. The movement of the axle with referenceto the framing yoke 21 is accommodated by the pivotal relation of thescrew shaft 17 to the yoke 21, permitting the yoke 15 and the pipe 12 bywhich it is carried to swing upon the screw shaft as a pivot. If now thewheel 10 next the land side be not advanced the extension of the axle11, 12 would not place the wheel in osition to track parallel with theland side 7 which is necessary to the correct operation of the machine.It is for the shifting of the wheel 10 next the land side that I haveprovided the screw 25. By ro tating the said screw 25 the body 22 isadvanced or receded toward and away from the front of the machine, as isalso shown by the dotted lines in Fig. 1 of drawings.

The screw shafts 1(3 and 17 are further provided to raise and lower theland side 7 and the blade 8 relative to the carrying wheels 10, 10. Thisoperation may be car ried to such an extent as to raise the blade andland side free of the ground, in which position the scraper is moved toand from the field of operation. These screw shafts can also be adjListed so that the extent of the operation of the cutting blade isregulated thereby.

Tn the operation wherein the blade and land side are raised from theground or regulated with regard to the cut to be made therein, thecarrying wheel 41 is likewise raised. This is accomplished by the screwwhich rotatably mounted in bearing blocks 31 and 32 rigidly secured uponthe land side 7 just forward of the bearing block 2'? which holds thescrew l-Teld upon the screw threaded extension 33 of the screw 30 and inscrew threaded engagement therewith is a trunnion block 3st, thetrunnions 35 of which are extended through suitable perforations in thecarrying arms 36, 36. The arms 36, are pivoted at 37 within the hingeyoke arms 38, 38. The hinge yoke arms 38 are set out from the body 39forming the hinge for the blade 8. The pivot 37 is fixed while thebearing block 3% .is raised and depressed on the threaded portion 33 ofthe screw 30. Midway between the pivot 27 and the trunnions 35, and uponthe arms 36, 36, are formed bearings for trunnions 40 of the crown wheel41. The periphery of the wheel ll is centrally ridged or crowned, asshown in the drawings, to compel the same to track in a line parallelwith the land side 7. hen now the screw 30 is rotated to raise or lowerthe block 3-1 the land side 7 is raised from or lowered to the ground.This action transpiring at the forward end of the land side andcorresponding with the raising and lowering of the wheel 10 at the rearend of the land side, the land side is lifted from the ground in a levelposition. To facilitate the rotation of the screw 30 it is provided witha hand wheel 42.

The machine is designed to be drawn by animals, and is provided with adraft bar d3 which pivotally mounted at 1stv in brackets 15 set out fromthe land side 7. The draft bar i3 is extended forward, pass-- ing undera loop 46 provided in the upper edge of the blade 8. At the forward endof the bar 43 there is provided any suitable form of clevis forattaching the team.

The machine is provided with a seat 47 for the driver which is mountedin the end of a seatbar T8. The said bar 48 is supported by a brace d9which is bowed upward from collars 50, 50 by which it is secured to thepipe 12. At the forward end of the bar 18 there is provided a hook 51which is secured to an eyelet suitably provided in the blade 8. The bar18 is usually constructed from a. material having sufiicient resiliencyto form a spring between the brace 49 and the seat at. By means of thisattachment the said structure in no wise interferes with the adjustmentof the blade 8, yielding to all positions of the same. It is to permitthis adjustment that the connection between the bar %8 and the brace 49is formed by a suitable pivot.

\Vith a machine such as described the operation would consist informing, in the first instance, a ditch wherein the land side 7 would beplaced so that the shoes 9, 9 rest upon the bottom of the ditch andagainst the side wall thereof. In this position of the land sidetheblade 8 is lowered into osit-ion to cut to a depth equal to theditch. The blade 8 is contracted as far as possible to approach the landside 7, and in this position the team is started, causing the machine todisplace the ground laterally for a certain width. On thesecondoperation, when the machine is returned to the starting point, theland side 7 is again adjusted to the bottom and side wall of the firstmentioned ditch, the blade 8 is thrown to an extended position and theoperation repeated, the outer end of the blade 8 operating to displacelaterally the ground for a wider area. These operations are repeateduntil the blade 8 is extended to its fullest capacity. If the grading bewider than that accommodated by the extension of the blade 8 theextended land side is called into operation. The extended land sidecomprises a shoe 52 of suificient length to bear against the side wallof the first made ditch and to resist the thrust of the blade 8. It ismounted on a frame pivoted at 53 toa pipe 5%, which forms, wit-h a pipe55, a telescopic relation. The telescopic extension is regulated byperforations 56, 56 formed in the outer pipe 54L and a pin 57 adapted toextend through the said perforations 56 and into the perforationprovided in the pipe to receive it. The pipe 55 is pivoted at 58 tobrackets 59 set out from the side of the land side 7. The frame carryingthe shoe 52 is braced in operative position by a. stay rod 60 which ispivoted to an eye-bolt 61 set out from the said land side 7 at theforward end of the machine. When employing the extended land sidecarrying the shoe 52 the operation of the plate 8 is the same as abovedescribed, starting on the most contracted angle to the land side 7 andgradually expanding to the widest spread angle, such as shown in dr'aW-ings at Fig. 1. The result of the totaloperation is that from a givenditch as aguide the whole surface of the road bed is graded.

The Wheels 10, 10 are mounted upon split bearings 62 which are formed inthe two parts illustrated in the drawings having the flanges 63 extendedtherefrom to guide the said wheels. The parts 62 are drawn tightlytogether upon the pipe 11 or 12, as the case may be, and clamped rigidlyin such position by means of bolts 64.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A road grading machine, comprising a land side extended in a lineparallel to the line of draft; a scoop blade hingedly secured to saidland side at the forward end thereof; carrying wheels for said machine;an extensible axle for said wheels pivotally attached to the land sideand blade; and an adjusting mechanism for moving the said carryingwheels lengthwise relative to said land side;

2. A road grading machine, comprising a land side extended in a lineparallel to the line of draft; a scoop blade hingedly secured to saidland side at the forward end thereof; carrying wheels for said machine;an axle for said wheels formed from pipes telescopically connected;means for securing the pipes in fixed relation; a pivotal mounting forone of said pipes to the said blade; a slidin connection on the landside for the other of said pipes; and a screw for adjusting said slidingconnection.

3. A road grading machine, comprising a land side extended in a lineparallel to the line of draft; a scoop blade hingedly secured to saidland side at the forward end thereof; carrying wheels for said machine;a slide member set out from the bearing side of said land side andadapted to bear against the wall of the ground; and means for extendingand holding said slide member in extended position.

4. A road grading machine, comprising a land side extended in a lineparallel to the line of draft; a scoop blade hingedly secured to saidland side at the forward end thereof; carrying wheels for said machine;a slide member adapted to bear against the side of the excavation in theground and a telescopic arm interposed between said slide member andsaid land side.

5. A road grading machine, comprising a land side extended in a lineparallel to the line of draft; a scoop blade hingedly secured to saidland side at the forward end thereof; carrying wheels for said machine;a sliding member adapted to bear against the side of the excavation inthe ground; a telescopic arm to, carry said sliding member and extendedfrom the bearing side of said land side; and a suitable stay to maintainthe said sliding member in operative position.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES W. HORTON.

Witnesses:

F. C. WILBANKS, JAMES A. ESMAN.

